Decided to overhaul my 25 year-old Miyata 912 to get the feel of old down tube-shifting steel. New tires, tubes, brake pads, cables, freewheel, chain, bearings. I'm sticking with a 6-speed freewheel although I believe I can upgrade to a narrower 7-speed setup. Should be an interesting comparison to my Giant OCR1. Wheels were mounted with 700Cx23 rubber and I don't recall very many flats during several centuries, but I probably only weighed 190 back then. Only change from a stock 912 was a conversion to a triple chainring. I don't know how these older frames stand up strength-wise, but I recall the bike as being pretty comfortable.